83959476481 has 4 divisors (see below), whose sum is σ = 83960082432. Its totient is φ = 83958870532.

The previous prime is 83959476451. The next prime is 83959476487. The reversal of 83959476481 is 18467495938.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 83959476481 - 2²⁵ = 83925922049 is a prime.

It is a super-6 number, since 6×83959476481⁶ (a number of 67 digits) contains 666666 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83959476487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18720 + ... + 410206.

It is an arithmetic number, because the mean of its divisors is an integer number (20990020608).

Almost surely, 2^83959476481 is an apocalyptic number.

It is an amenable number.

83959476481 is a deficient number, since it is larger than the sum of its proper divisors (605951).

83959476481 is a wasteful number, since it uses less digits than its factorization.

83959476481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605950.

The product of its digits is 52254720, while the sum is 64.

The spelling of 83959476481 in words is "eighty-three billion, nine hundred fifty-nine million, four hundred seventy-six thousand, four hundred eighty-one".